US7093859B2 - Tubing and connector assembly - Google Patents
Tubing and connector assembly Download PDFInfo
- Publication number
- US7093859B2 US7093859B2 US10/785,549 US78554904A US7093859B2 US 7093859 B2 US7093859 B2 US 7093859B2 US 78554904 A US78554904 A US 78554904A US 7093859 B2 US7093859 B2 US 7093859B2
- Authority
- US
- United States
- Prior art keywords
- assembly
- mold
- rod
- portions
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/08—Tubes; Storage means specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
- F16L47/32—Branch units, e.g. made in one piece, welded, riveted
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/08—Tubes; Storage means specially adapted therefor
- A61M2039/087—Tools for handling tubes, e.g. crimping tool for connecting tubes to a connector
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2207/00—Methods of manufacture, assembly or production
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2207/00—Methods of manufacture, assembly or production
- A61M2207/10—Device therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/66—Interfitted members with external bridging piece
Definitions
- the present invention generally relates to tubing and connector assemblies and, specifically, to those assemblies utilizing multi-lumen connectors.
- Tubing assemblies including flexible tubing and multi-lumen connectors have been used in many applications, including those that require a high degree of assurance that contamination will not enter the system by way of the connector.
- Applications of such systems include closed systems in the medical field in which the flexible tubing may be clipped into a peristaltic pump used for medical purposes.
- Past tubing and connector assemblies have required various means for securing the connectors to the flexible tubing, including mechanical connectors or adhesive. These systems are therefore susceptible to contaminants entering the system at the point of connection.
- Connectors have been molded directly to two tubes, however, to Applicant's knowledge, there has never been an acceptable method of directly molding a multi-lumen connector to three or more flexible tubes. In general, this is due to the problems associated with maintaining fluid passages within the connector and between the multiple tubes during and after the molding process.
- the present invention therefore generally provides an integral connector and tubing assembly including a one-piece, multi-lumen connector having at least three connector portions and at least three tubes.
- Each of the tubes is molded into one connector portion, and a fluid path extends within each connector portion and communicates between each of the three tubes.
- the connector may be “Y” shaped with three connector portions respectively receiving three flexible tubes.
- the connector assembly may also have additional connector portions and a like number of additional flexible tubes.
- the connector is preferably molded from liquid silicone while the tubes are preferably flexible and formed from a thermoset silicone.
- a method of molding a connector and tubing assembly of the present invention generally includes molding first and second portions of a connector around respective ends of first and second tubes while maintaining fluid passages through the first and second portions and in communication with internal fluid bores of the first and second tubes and then molding a third portion of the connector around an end of a third tube and connected with the first and second portions while maintaining a fluid passage between the end of the third tube and the fluid passages in the first and second portions.
- first and second rod members are placed in the respective ends of the first and second tubes prior to molding the first and second portions and a third rod member is placed in the end of the third tube prior to molding the third portion.
- the first and second rod members Prior to molding the third portion, the first and second rod members are removed from the first and second portions of the connector.
- the first and second rod members may be part of a “Y” shaped member and each molding step may be performed in a single mold.
- a more specific and preferred method of making the connector and tubing assembly according to this invention includes the steps of: connecting the internal fluid bores of respective ends of first and second tubes to first and second rod members; placing the rod members and the ends of the first and second tubes into a first mold cavity; filling the first mold cavity with curable material to form first and second connector portions around the ends of the first and second tubes and the first and second rod members such that the first and second rod members form fluid passages through the connector; withdrawing the first and second rod members; inserting a third rod member into the internal fluid bore in an end of a third tube; placing the end of the third tube into a second mold cavity and in engagement with at least one of the fluid passages; filling the second mold cavity with additional curable material to form a third connector portion; and removing the third rod member.
- the first and second mold cavities communicate with one another in the same mold.
- the mold may be an injection mold.
- a mold insert may be placed within the second mold cavity prior to filling the first mold cavity with the curable material. This prevents the curable material from filling the second mold cavity during this initial molding step.
- the mold insert is generally solid but preferably includes a central hole.
- the first and second rod members may be part of a “Y” shaped member.
- the second step further includes placing a third leg of the “Y” shaped member within the central hole of the insert and placing the insert within the second mold cavity.
- the mold insert may have a protrusion surrounding the hole and this protrusion may then form a recess in communication with the passages in the initially formed connector portions.
- This recess can be used to locate or receive the third tube prior to the second molding step, i.e., prior to filling the second mold cavity with additional curable material.
- FIG. 1 is a perspective view of a connector and tubing assembly constructed in accordance with the preferred embodiment of this invention
- FIG. 2 is a perspective view, partially exploded, of the initial steps of a molding process used to form the product of FIG. 1 ;
- FIG. 3 is a perspective view of the molding process at a later stage
- FIG. 4 is a perspective view of an intermediate product formed by the molding process
- FIG. 5 is a sectional view taken generally along line 5 — 5 of FIG. 4 and also showing the removal of an internal “Y” shaped mold member as well as an additional tube containing a rod used later in the molding process; and,
- FIG. 6 is the intermediate product shown in perspective within the mold cavity with the third tube in place just prior to the final molding step.
- FIG. 1 illustrates a connector and tubing assembly 10 after a connector 11 has been molded with portions 12 , 14 , 16 holding flexible tubes 18 , 20 , 22 together for fluid communication therebetween.
- This structure therefore forms an integral fluid conveyance system which is not easily compromised at the junctions between connector 11 and tubes 18 , 20 , 22 .
- FIGS. 2–6 illustrate the preferred manner of making the connector and tubing assembly 10 .
- a mold half 30 is provided having an internal mold cavity 31 in the shape of the desired connector 11 .
- Cavity 31 is preferably formed by three smaller cavities 32 , 34 , 36 each having respective ports 38 , 40 , 42 .
- Curable mold material such as conventional liquid silicone, may be injected through ports 38 , 40 , 42 into cavity 31 after a second mold half is brought into facing engagement, as will be described below.
- Recesses 44 , 46 , 48 are respectively provided for holding tubes 18 , 20 , 22 such that respective connecting ends 18 a , 20 a , 22 a extend within cavity portions 32 , 34 , 36 .
- An inner mold member 50 is provided and may be formed from low density polyethylene (LDPE). Mold member 50 may be generally “Y” shaped and serves to help form a fluid passageway between the internal fluid bores 18 b , 20 b , 22 b of tubes 18 , 20 , 22 after molding is complete.
- LDPE low density polyethylene
- first and second tubes 18 , 20 are inserted onto respective first and second rod members 52 , 54 of mold member 50 and a third rod member or leg 56 receives a mold insert 58 which may be formed of metal, such as stainless steel, and generally takes the shape of cavity portion 36 .
- Mold insert 58 includes a central protrusion on an end facing cavity portions 32 , 34 and includes a central hole 62 for receiving rod member 56 of inner mold member 50 .
- mold half 64 has cavities and recesses (not shown) which are the mirror image of cavity portions 32 , 34 , 36 and recesses 44 , 46 , 48 of mold half 30 .
- the mold is then shot, i.e., curable mold material is injected into cavities 32 , 34 of mold 30 through ports 38 , 40 , and after curing thereof, an intermediate product as shown in FIG. 4 will result.
- cavities 32 , 34 act as one cavity for producing connector portions 12 , 14 which, in turn, form a single integral connector portion.
- Metal mold insert 58 is removed from rod member 56 and then the “Y” shaped inner mold member 50 is withdrawn from connector portions 12 , 14 and tubes 18 , 20 by pulling on rod member 56 .
- Mold member 50 is flexible and may be withdrawn with reasonable manual force being applied by a pair of pliers.
- the third tube 22 is prepared for the final molding step. That is, a straight plastic rod 66 , also preferably formed of LDPE, is inserted into tube end 22 a with a small portion 66 a extending outwardly from end 22 a .
- This assembly is placed into mold half 30 as shown in FIG. 6 with rod end 66 a extending into a passage 67 formed within connector portions 12 , 14 by rod member 56 and with tube end 22 a held within a recess 68 formed by protrusion 60 ( FIG. 2 ) on mold insert 58 . It will therefore be appreciated that rod end 66 a will maintain fluid passage 67 open during the second molding step.
- Mold half 64 is again brought into facing engagement with mold half 30 and the final cavity 36 is injected with curable mold material, again taking the form of conventional liquid silicone.
- rod 66 may be blown out of tube 22 by injecting pressurized air into tube 18 after tube 20 has been plugged, or into tube 20 after tube 18 has been plugged.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Pulmonology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/785,549 US7093859B2 (en) | 1997-08-11 | 2004-02-24 | Tubing and connector assembly |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/909,450 US6290265B1 (en) | 1997-08-11 | 1997-08-11 | Tubing and connector assembly and method and molding |
US09/951,366 US20020050663A1 (en) | 1997-08-11 | 2001-09-13 | Tubing and connector assembly and method of moldimg |
US10/785,549 US7093859B2 (en) | 1997-08-11 | 2004-02-24 | Tubing and connector assembly |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/951,366 Continuation US20020050663A1 (en) | 1997-08-11 | 2001-09-13 | Tubing and connector assembly and method of moldimg |
Publications (2)
Publication Number | Publication Date |
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US20040164555A1 US20040164555A1 (en) | 2004-08-26 |
US7093859B2 true US7093859B2 (en) | 2006-08-22 |
Family
ID=25427250
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/909,450 Expired - Lifetime US6290265B1 (en) | 1997-08-11 | 1997-08-11 | Tubing and connector assembly and method and molding |
US09/951,366 Abandoned US20020050663A1 (en) | 1997-08-11 | 2001-09-13 | Tubing and connector assembly and method of moldimg |
US10/785,761 Expired - Lifetime US7407612B2 (en) | 1997-08-11 | 2004-02-24 | Method of molding a connector and tubing assembly |
US10/785,549 Expired - Fee Related US7093859B2 (en) | 1997-08-11 | 2004-02-24 | Tubing and connector assembly |
US12/171,166 Abandoned US20080267699A1 (en) | 1997-08-11 | 2008-07-10 | Method of molding a connector and tubing assembly |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/909,450 Expired - Lifetime US6290265B1 (en) | 1997-08-11 | 1997-08-11 | Tubing and connector assembly and method and molding |
US09/951,366 Abandoned US20020050663A1 (en) | 1997-08-11 | 2001-09-13 | Tubing and connector assembly and method of moldimg |
US10/785,761 Expired - Lifetime US7407612B2 (en) | 1997-08-11 | 2004-02-24 | Method of molding a connector and tubing assembly |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/171,166 Abandoned US20080267699A1 (en) | 1997-08-11 | 2008-07-10 | Method of molding a connector and tubing assembly |
Country Status (1)
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US (5) | US6290265B1 (en) |
Cited By (15)
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US20080277926A1 (en) * | 2005-10-21 | 2008-11-13 | Inman Jr William D | Fluid Transfer Assembly |
US20090152746A1 (en) * | 2007-10-16 | 2009-06-18 | Adc Telecommunications, Inc. | Multi-stage injection over-molding system with intermediate support and method of use |
US20090243284A1 (en) * | 2008-03-18 | 2009-10-01 | Saint-Gobain Performance Plastics Corpration | Fluid Transfer Assemblies and Related Methods |
US20130043676A1 (en) * | 2011-08-16 | 2013-02-21 | Newage Industries, Inc. | Overmolded seal for barbed tubing connection |
US10006567B2 (en) | 2011-06-22 | 2018-06-26 | Sartorius Stedim North America, Inc. | Vessel closures and methods for using and manufacturing same |
US10309556B2 (en) | 2015-04-17 | 2019-06-04 | Saint-Gobain Performance Plastics Corporation | Sterile port connection |
US10322275B2 (en) | 2015-10-30 | 2019-06-18 | ECMOtek, LLC | Devices for endovascular access through extracorporeal life support circuits |
US10486959B2 (en) | 2011-06-22 | 2019-11-26 | Sartorius Stedim North America Inc. | Fluid transfer interface |
WO2019236801A1 (en) * | 2018-06-07 | 2019-12-12 | Reliance Worldwide Corporation | Stub-out configuration for plumbing assembly |
US10550966B2 (en) | 2015-04-17 | 2020-02-04 | Meissner Filtration Products, Inc. | Modular molding |
US10647565B2 (en) | 2013-12-06 | 2020-05-12 | Sartorius Stedium North America, Inc. | Fluid transfer interface |
US10773863B2 (en) | 2011-06-22 | 2020-09-15 | Sartorius Stedim North America Inc. | Vessel closures and methods for using and manufacturing same |
US11319201B2 (en) | 2019-07-23 | 2022-05-03 | Sartorius Stedim North America Inc. | System for simultaneous filling of multiple containers |
US11577953B2 (en) | 2017-11-14 | 2023-02-14 | Sartorius Stedim North America, Inc. | System for simultaneous distribution of fluid to multiple vessels and method of using the same |
US11691866B2 (en) | 2017-11-14 | 2023-07-04 | Sartorius Stedim North America Inc. | System for simultaneous distribution of fluid to multiple vessels and method of using the same |
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US6290265B1 (en) * | 1997-08-11 | 2001-09-18 | Saint-Gobain Performance Plastics Corporation | Tubing and connector assembly and method and molding |
US6572588B1 (en) | 2000-03-10 | 2003-06-03 | Venetec International, Inc. | Medical anchoring system |
US6413240B1 (en) * | 2000-08-03 | 2002-07-02 | Venetec International, Inc. | Dialysis catheter anchoring system |
JP2003056782A (en) * | 2001-08-09 | 2003-02-26 | Nissan Motor Co Ltd | Connecting structure between resin-made connector and resin-made tube |
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US6902210B1 (en) | 2002-11-01 | 2005-06-07 | William W. Rowley | Universal connector tubing |
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US10550966B2 (en) | 2015-04-17 | 2020-02-04 | Meissner Filtration Products, Inc. | Modular molding |
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US10576260B2 (en) | 2015-10-30 | 2020-03-03 | ECMOtek, LLC | Devices for endovascular access through extracorporeal life support circuits |
US10441774B2 (en) | 2015-10-30 | 2019-10-15 | ECMOtek, LLC | Devices for endovascular access through extracorporeal life support circuits |
US10322275B2 (en) | 2015-10-30 | 2019-06-18 | ECMOtek, LLC | Devices for endovascular access through extracorporeal life support circuits |
US11577953B2 (en) | 2017-11-14 | 2023-02-14 | Sartorius Stedim North America, Inc. | System for simultaneous distribution of fluid to multiple vessels and method of using the same |
US11623856B2 (en) | 2017-11-14 | 2023-04-11 | Sartorius Stedim North America Inc. | System for simultaneous distribution of fluid to multiple vessels and method of using the same |
US11691866B2 (en) | 2017-11-14 | 2023-07-04 | Sartorius Stedim North America Inc. | System for simultaneous distribution of fluid to multiple vessels and method of using the same |
WO2019236801A1 (en) * | 2018-06-07 | 2019-12-12 | Reliance Worldwide Corporation | Stub-out configuration for plumbing assembly |
US10914404B2 (en) | 2018-06-07 | 2021-02-09 | Reliance Worldwide Corporation | Stub-out configuration for plumbing assembly |
US11319201B2 (en) | 2019-07-23 | 2022-05-03 | Sartorius Stedim North America Inc. | System for simultaneous filling of multiple containers |
Also Published As
Publication number | Publication date |
---|---|
US20080267699A1 (en) | 2008-10-30 |
US7407612B2 (en) | 2008-08-05 |
US6290265B1 (en) | 2001-09-18 |
US20040164453A1 (en) | 2004-08-26 |
US20020050663A1 (en) | 2002-05-02 |
US20040164555A1 (en) | 2004-08-26 |
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